Question

If you tripled the slant height and radius of a cone, what would be the formula to find the modified surface area?
A.
2004-06-01-03-00_files/i0120000.jpg
B.
2004-06-01-03-00_files/i0120001.jpg
C.
2004-06-01-03-00_files/i0120002.jpg
D.
2004-06-01-03-00_files/i0120003.jpg

Answer 1

Hai welcome to QuestionCove c:
Those files didnt load so may you please attach any pictures?

Answer 2

A)

\[\frac{ 1 }{ 3 }\pi*rl + \frac{ 1 }{ 3 }\pi*r^2\]

B) 6*pi*r*l + 6*pi*r^2

C) 12*pi*r*l + 9*pi*r^2

D) 9*pi*r*l + 9*pi*r^2

Answer 3

Oh god Voca I prefered it when I couldnt see it

Answer 4

Yeah I dunno how to explain this, you got it e.e

Answer 5

I mean

you just gotta take the SA formula for a cone given the slant height and radius

SA = \(\pi*r^2 + \pi*r*l\)
where r is the radius and l is the slant height

since the problem specifies that the slant height and radius are tripled, simply substitute 3r and 3l into the equation and find SA